Tandem OLED device with intermediate connector

US7821201B2 · kind B2 · utility

Assignee

• Global OLED Technology LLC · US

Inventors

• Tukaram K. Hatwar · Penfield, US
• Jeffrey P. Spindler · Rochester, US
• William J. Begley · Webster, US

Key dates

• Filing date: Jan 31, 2008
• Grant date: Oct 26, 2010
• Expiry date: Apr 23, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H10K85/6572

Abstract

A tandem OLED device including an anode; a cathode; at least two electroluminescent units disposed between the anode and the cathode, wherein each of the electroluminescent units includes at least one hole-transporting layer and one organic light-emitting layer; and an intermediate connector of at least two layers disposed between adjacent electroluminescent units, wherein the intermediate connector includes an organic alkali metal complex layer and an organic electron-accepting layer, the organic electron-accepting layer being disposed closer to the cathode than the organic alkali metal complex layer, and there is present metallic aluminum in the organic alkali metal complex layer.